There is provided a multi-junction photovoltaic device comprising a first sub-cell disposed over a second sub-cell, the first sub-cell comprising a photoactive region comprising a layer of perovskite material and the second sub-cell comprising a silicon heterojunction (SHJ).

This application provides a solar cell, a method for preparing the solar cell, smart glasses, and an electronic device. The solar cell includes a first conductive layer, a second conductive layer, a first conductive lattice, a second conductive layer, and a functional layer. The functional layer is disposed between the first conductive layer and the second conductive layer, the functional layer is configured to absorb light and generate a photocurrent, and both the first conductive layer and the second conductive layer are configured to receive the photocurrent. The first conductive lattice is in contact with a surface that is of the first conductive layer. The second conductive lattice is in contact with the second conductive layer, and the first conductive lattice and the second conductive lattice are configured to output the photocurrent to the target device. This application can mitigate impact of a sheet resistance on cell efficiency.

An objective of the disclosure is to provide an organic light-emitting composite material based on an exciplex, which, when used as a light-emitting layer, can enhance the efficiency of an organic electroluminescent device. The disclosure also relates to an organic light-emitting device comprising the organic light-emitting composite material, and use of the organic light-emitting composite material of the disclosure for an organic electron device.

An imaging device includes: a first electrode; a charge storage electrode disposed at a distance from the first electrode; a photoelectric conversion layer in contact with the first electrode and above the charge storage electrode, with an insulating layer between the charge storage electrode and the photoelectric conversion layer; and a second electrode on the photoelectric conversion layer. The portion of the insulating layer between the charge storage electrode and the photoelectric conversion layer includes a first region and a second region, the first region is formed with a first insulating layer, the second region is formed with a second insulating layer, and the absolute value of the fixed charge of the material forming the second insulating layer is smaller than the absolute value of the fixed charge of the material forming the first insulating layer.

An optical element includes a photoelectric conversion film and an inorganic substance-containing film containing at least one selected from the group consisting of a metal nitride and a metal oxynitride, in which the photoelectric conversion film contains a quantum dot or at least one compound semiconductor selected from the group consisting of a III-V group compound semiconductor, a II-VI group compound semiconductor, and a IV-IV group compound semiconductor, and the optical density of an inorganic substance-containing film is 0.5 or more per 1.0 μm of a film thickness at a wavelength of 1,550 nm.

The technology of this application relates to a cell assembly and a method for preparing a cell assembly. The cell assembly includes a first subcell, a second subcell adjacent to the first subcell, and a bottom electrode. Both the first subcell and the second subcell include a P-type layer and an N-type layer, and a light-harvesting layer located between the P-type layer and the N-type layer. The P-type layer of the first subcell is connected to the N-type layer of the second subcell by using the bottom electrode. A connection manner between subcells is provided. Compared with a current manner in which P1, P2, and P3 gaps are formed between subcells through cutting to implement interconnection, geometrical optical loss brought by interconnection between the subcells can be reduced.

Described herein is a printed photovoltaic cell comprising an anode; an LEP printed cathode; and an LEP printed photovoltaic layer disposed between the anode and the cathode. The photovoltaic layer comprises a material with a perovskite structure having a chemical formula selected from ABX.sub.3 and A.sub.2BX.sub.6 and a thermoplastic resin comprising a copolymer of an alkylene monomer and a monomer having acidic side groups; and/or a copolymer of an alkylene monomer and an ethylenically unsaturated monomer comprising an epoxide; and/or a copolymer of an alkylene monomer, an ethylenically unsaturated monomer comprising an epoxide, and a monomer selected from a monomer having acidic side groups, a monomer having ester side groups and a mixture thereof. The printed cathode comprises: a thermoplastic resin; and electrically conductive metal particles. Also described herein is a method of producing the printed photovoltaic cell and an ink set for use in the method.

A method of combining different materials to produce the comonomer

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wherein X.sub.1 and X.sub.2 are independently selected from the group consisting of: F, Cl, H, and combinations thereof and wherein R.sub.1 is independently selected from unsubstituted or substituted branched alkyls with 1 to 60 carbon atoms and unsubstituted or substituted linear alkyls with 1 to 60 carbon atoms.

A photovoltaic device (10) comprising a photoactive body between two electrodes (contact 1, contact 2). The body comprises semiconductor particles (24) embedded in a semiconductor matrix (22). The particles and matrix are electronically or optically coupled so that charge carriers generated in the particles are transferred directly or indirectly to the matrix. The matrix transports positive charge carriers to one of the electrodes and negative charge carriers to the other electrode. The particles are configured so that they do not form a charge carrier transport network to either of the electrodes and so perform the function of charge carrier generation but not charge carrier transport.

A method for preparing photoactive perovskite materials. The method comprises the step of preparing a germanium halide precursor ink. Preparing a germanium halide precursor ink comprises the steps of: introducing a germanium halide into a vessel, introducing a first solvent to the vessel, and contacting the germanium halide with the first solvent to dissolve the germanium halide. The method further comprises depositing the germanium halide precursor ink onto a substrate, drying the germanium halide precursor ink to form a thin film, annealing the thin film, and rinsing the thin film with a second solvent and a salt.